Memory leak in scanner plugin only in iOS 10

I have a cordova(currently 5.3.3) project that uses the phonegap-plugin-barcodescanner (v 6.0.1). Recently I have encountered what I believe is a large memory leak of some kind in iOS 10. When the application runs on iOS 10, it appears to never deallocate the resources tied to the scanner. However on iOS 7 or 9, everything works fine. This can be seen below in the memory reports.

iOS 10

iOS 7

I've attempted to trace the leaks using the leak checker in Instruments, but I cannot seem to find anything substantial in the tests. All I can find using that tool is around 1KB of leaked objects per scan.

I guess my main question would be, is there a better way to trace the memory issue that appears to be tied to this scanner? Was there some kind of change in the way deallocation/ref counts are occurring in iOS 10 that would cause such a drastic change?

I've created a barebones cordova project with the above mentioned plugin, and implemented a basic scanner call into a button as shown in this code which should provide a reproducible test.

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EDIT: After further investigation, I've noticed that there appears to be a rather large IOKit allocation in the VM that i'm not sure where it's coming from. You can see here from the VM Summary that with the iPad it is not allocating these 100 MiB chunks, but does so in iOS 10. I'm still not really that sure where this is coming from or what would force these extra calls.

After some discussion on github and further investigation, I found that the issue was caused by the plugin using the AVCaptureVideoDataOutputSampleBufferDelegate. It appeared that the video output settings were resulting in some leaks at the IOKit level.

The resolution to this was to update the plugin to use the AVCaptureMetadataOutputObjectsDelegate and update the output to use the AVCaptureMetadataOutput type. This required implementation of the method (void)captureOutput:(AVCaptureOutput*)captureOutput didOutputMetadataObjects:(NSArray*)metadataObjects fromConnection:(AVCaptureConnection*)connection

This method was very similar to the previous one, but instead of using the zxing library to do the decoding, the decoding was done with a loop and AVMetadata classes: